The given chemical equation represents which type of chemical reaction? \[CuS{{O}_{4}}\left( aq \right)+Zn\left( s \right)\to ZnS{{O}_{4}}(aq)+Cu\left( s \right)\]
A)
Combination reaction
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B)
Decomposition reaction
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C)
Displacement reaction
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D)
Double displacement reaction
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E)
None of these
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If the pH value of a solution is 9, the solution is:
A)
Basic
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B)
Acidic
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C)
Neutral
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D)
Both [a] and [b]
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E)
None of these
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Which of the following elements is a non-metal?
A)
Nitrogen
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B)
Tin
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C)
Lead
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D)
Calcium
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E)
None of these
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Which one of the following is the most malleable metal?
A)
Copper
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B)
Iron
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C)
Gold
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D)
Silicon
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E)
None of these
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Which of the following is the molecular formula of propane?
A)
\[{{C}_{3}}{{H}_{6}}\]
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B)
\[{{C}_{3}}{{H}_{3}}\]
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C)
\[{{C}_{3}}{{H}_{12}}\]
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D)
\[{{C}_{3}}{{H}_{8}}\]
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E)
None of these
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The radius of curvature of a spherical mirror is 6 cm. What is its focal length?
A)
3 cm
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B)
6 cm
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C)
12 cm
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D)
20 cm
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E)
None of these
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Which one of the following statements is correct? Statement 1: Ionic bonds are formed by the transfer of electrons from one atom to another Statement 2: Covalent bonds are formed by the transfer of electrons from one atom to another
A)
Statement 1
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B)
Statement 2
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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In which one of the following cell organelles, the process of photosynthesis occurs?
A)
Mitochondria
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B)
Ribosomes
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C)
Chloroplast
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D)
Nucleolus
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E)
None of these
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The movement of a plant part in response to water is called:
A)
Phototropism
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B)
Hydrotropism
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C)
Chemotropism
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D)
Geotropism
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E)
None of these
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Which one of the following gas is formed when sodium reacts with dilute hydrochloric acid?
A)
Hydrogen
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B)
Nitrogen
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C)
Oxygen
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D)
Carbon dioxide
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E)
None of these
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Which one of the following secretes the hormone insulin?
A)
Liver
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B)
Pancreas
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C)
Testes
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D)
Ovaries
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E)
None of these
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Which one of the following statements is correct? Statement 1: Budding is a form of asexual reproduction Statement 2: Fragmentation is a form of sexual reproduction
A)
Statement 1
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B)
Statement 2
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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Which one of the following process involves the release of an ovum from an ovary?
A)
Fertilization
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B)
Implantation
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C)
Ovulation
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D)
Gestation
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E)
None of these
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The description of genes present in an organism is known as:
A)
Genotype
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B)
Phenotype
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C)
Homozygous
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D)
Heterozygous
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E)
None of these
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Wings of a bird and an insect are example of:
A)
Homologous organs
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B)
Analogous organs
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C)
Recessive organs
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D)
All of these
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E)
None of these
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Focal length of a lens is 50 cm, calculate its power.
A)
\[+\,\,2D\]
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B)
\[-\,\,2D\]
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C)
\[+\,\,1D\]
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D)
\[-\,\,1\,D\]
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E)
None of these
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How much work is done in moving a charge of 6 coulombs from a point at 100 volts to the point at 120 volts?
A)
120 joules
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B)
140 joules
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C)
150 joules
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D)
160 joules
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E)
None of these
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Calculate the total resistance of the circuit given below.
A)
\[4\,\Omega \]
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B)
\[5.32\,\Omega \]
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C)
\[6\,\,\Omega \]
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D)
\[7\,\,\Omega \]
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E)
None of these
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What has been shown in the following figure?
A)
Magnetic field lines due to a current carrying straight wire
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B)
Magnetic field lines due to a current carrying circular wire
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C)
Magnetic field lines due to a current carrying solenoid
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D)
Magnetic field lines due to a bar magnet
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E)
None of these
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Which one of the following wastes can be decomposed by micro-organisms easily?
A)
Iron nails
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B)
Silver foils
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C)
Plastic bottles
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D)
Animal dung
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E)
None of these
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Which one of the following statements is correct? Statement 1: A desert is an example of a land based ecosystem. Statement 2: A pond is an example of a water based ecosystem.
A)
Statement 1
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B)
Statement 2
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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In the following food chain, if 100 J of energy is available at the producer level, then the energy transferred to the hawk is: Plants \[\to \] mice \[\to \] snake \[\to \] hawk
A)
10 J
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B)
1 J
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C)
0.1 J
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D)
100 J
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E)
None of these
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Snake is present at which tropic level in following food chain? Grass \[\to \] Insects \[\to \] frog \[\to \] snake
A)
First tropic level
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B)
Second tropic level
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C)
Third tropic level
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D)
Fourth tropic level
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E)
None of these
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From left to right in a period, the acidic nature of the oxides of elements
A)
Decreases
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B)
Increases
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C)
Does not change
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D)
Changes irregularly
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E)
None of these
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Which one of the following is the reducing agent in the given chemical reaction? \[ZnO+C\to Zn+CO\]
A)
\[ZnO\]
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B)
\[C\]
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C)
\[Zn\]
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D)
\[CO\]
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E)
None of these
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Which of the following is the chemical name of caustic soda?
A)
Sodium hydroxide
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B)
Sodium carbonate
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C)
Sodium sulphate
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D)
Sodium hydride
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E)
None of these
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Which of the following is a saturated hydrocarbon?
A)
Propane
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B)
Ethene
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C)
Ethyne
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D)
Propene
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E)
None of these
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An electric heater of power 1000 W has a resistance of\[10\,\Omega \]. Calculate magnitude of current drawn by the electric heater.
A)
5 A
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B)
10 A
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C)
15 A
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D)
25 A
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E)
None of these
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Consider the following two statements: Statement A: Zinc is more reactive than calcium. Statement B: Calcium is more reactive than mercury. Which of the following is correct with respect to the above statements?
A)
Statement A
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B)
Statement B
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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The lUPAC name of the given hydrocarbon is:
A)
n-pentane
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B)
Isobutene
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C)
Hexyne
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D)
n-hexane
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E)
None of these
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Which one of the following statements is correct? Statement A: The small intestine is the main region for the absorption of digested food. Statement B: The stomach is the main region for the absorption of digested food.
A)
Statement A
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B)
Statement B
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C)
Both statements are correct
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D)
Both statements are incorrect
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E)
None of these
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Which one of the following can lose two electrons to attain the configuration of neon?
A)
Ca
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B)
C
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C)
Mg
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D)
Fe
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E)
None of these
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Which one of the following glands is present in brain?
A)
Hypothalamus gland
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B)
Thyroid gland
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C)
Thymus gland
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D)
Parathyroid gland
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E)
None of these
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Which one of the following is a part of lymphatic system?
A)
Lymph capillaries
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B)
Lymph nodes
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C)
Lymph
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D)
All of these
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E)
None of these
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Which of the following is a method of artificial propagation of plants?
A)
Cutting
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B)
Layering
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C)
Grafting
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D)
All of these
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E)
None of these
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The common name of ethanoic acid is:
A)
Acetic acid
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B)
Formic acid
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C)
Butanoic acid
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D)
Propanoic acid
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E)
None of these
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If diametre of a wire is doubled whereas length remains same, the resistance of the wire will become:
A)
Half of initial value
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B)
One-fourth of initial value
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C)
One-eighth of initial value
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D)
Twice of initial value
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E)
None of these
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Look at the following figure and choose the correct option about the nature of image.
A)
Real, smaller than the object, inverted
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B)
Virtual, smaller than the object, erect
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C)
Real, larger than the object, inverted
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D)
Real, smaller than the object, erect
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E)
None of these
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An object is placed at a distance of 20 cm from a convex mirror of focal length 25 cm. Calculate the position of the image.
A)
10.5 cm
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B)
11.11 cm
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C)
9.63 cm
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D)
13.23 cm
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E)
None of these
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Light enters from air to glass having refractive index 1.50. What is the speed of light in glass? The speed of light in air is \[3\times {{10}^{8}}\,m/s\]
A)
\[1\times {{10}^{8}}\,m/s\]
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B)
\[2\times {{10}^{8}}\,m/s\]
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C)
\[3\times {{10}^{8}}\,m/s\]
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D)
\[4\times {{10}^{8}}\,m/s\]
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E)
None of these
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